ADC 16 Click Board

How Does The ADC 16 Click Board™ Work?

The ADC 16 Click Board™ is based on the ADS7142-Q1, a high-performance two-channel analog-to-digital converter (ADC) from Analog Devices. The ADS7142-Q1 represents a dual-channel, 12-bit programmable sensor monitor with an integrated 140kSPS SAR-ADC, input multiplexer, digital comparator, data buffer, accumulator, and internal oscillator. The input multiplexer can be configured as two single-ended channels, one single-ended channel with remote ground sensing, or one pseudo-differential channel where the input can swing to approximately half the value of its analog supply input.

The ADC 16 Click Board™ communicates with MCU using the standard I2C 2-Wire interface to read data and configure settings. Besides, the ADS7142-Q1 allows choosing the least significant bit (LSB) of its I2C slave address using the SMD resistors labelled R8 and R9. This Click board™ also implements event-triggered interrupts per channel, labelled as RDY and ALR and routed on the AN and INT pins of the mikroBUS™ socket, using a digital window comparator with programmable high and low thresholds, hysteresis, and event counter.

The ADC 16 Click Board™ can be operated only with a 3.3V logic voltage level. The board must perform appropriate logic voltage level conversion before using MCUs with different logic levels. However, the Click board™ comes equipped with a library containing functions and an example code that can be used, as a reference, for further development.

SPECIFICATIONS

PINOUT DIAGRAM

This table shows how the pinout on ADC 16 Click corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).

Notes	Pin					Pin	Notes
Data Ready Interrupt	RDY	1	AN	PWM	16	NC
NC	2	RST	INT	15	ALR	Event Alert Interrupt
NC	3	CS	RX	14	NC
NC	4	SCK	TX	13	NC
NC	5	MISO	SCL	12	SCL	I2C Clock
NC	6	MOSI	SDA	11	SDA	I2C Data
Power Supply	3.3V	7	3.3V	5V	10	NC
Ground	GND	8	GND	GND	9	GND	Ground

ONBOARD SETTINGS AND INDICATORS

ADC 16 CLICK ELECTRICAL SPECIFICATIONS

Software Support

We provide a library for the ADC 16 Click Board™ as well as a demo application (example), developed using MikroElektronika compilers. The demo can run on all the main MikroElektronika development boards.

The package can be downloaded/installed directly from NECTO Studio The package Manager (recommended), downloaded from our LibStock™ or found on MikroE Github account.

Library Description

This library contains API for the ADC 16 Click Board™ driver.

Key functions

• adc16_single_register_write This function writes a single data to the selected register.

• adc16_single_register_read This function reads a single data from the selected register.

• adc16_get_voltage This function reads the voltage from two analog input single-ended channels.

Example Description

This example demonstrates the use of the ADC 16 Click Board™ by reading the voltage from the two analog input channels.

void application_task ( void ) 
 { 
     float ain0_voltage, ain1_voltage; 
     if ( ADC16_OK == adc16_get_voltage ( &adc16, &ain0_voltage, &ain1_voltage ) ) 
     { 
         log_printf ( &logger, " AIN0 voltage: %.3f V rn", ain0_voltage ); 
         log_printf ( &logger, " AIN1 voltage: %.3f V rnn", ain1_voltage ); 
         Delay_ms ( 100 ); 
     } 
 }

The full application code, and ready to use projects can be installed directly from NECTO Studio The package Manager (recommended), downloaded from our LibStock™ or found on MikroE Github account.

Other MikroE Libraries used in the example:

• MikroSDK.Board
• MikroSDK.Log
• Click.ADC16

Additional Notes and Information

Depending on the development board you are using, you may need USB UART click, USB UART 2 Click or RS232 Click to connect to your PC, for development systems with no UART to USB interface available on the board. UART terminal is available in all MikroElektronika compilers.

MIKROSDK

The ADC 16 Click Board™ is supported with mikroSDK - MikroElektronika Software Development Kit. To ensure proper operation of mikroSDK compliant Click board™ demo applications, mikroSDK should be downloaded from the LibStock and installed for the compiler you are using.